Record how often we end up in Chrome from external navigations.

chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
index 6a4cc99c31cf2ff84d7337ffbc228babd3b2ea5d..3ac23a27f3e56a139be09d95ff6a011438a5c8ad 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
@@ -32,7 +32,7 @@ interface ExternalNavigationDelegate {
      * Search for intent handlers that are specific to this URL aka, specialized apps like
      * google maps or youtube
      */
-    boolean isSpecializedHandlerAvailable(List<ResolveInfo> intent);
+    boolean isSpecializedHandlerAvailable(List<ResolveInfo> infos);
 
     /**
      * Returns the number of specialized intent handlers in {@params infos}. Specialized intent
@@ -106,6 +106,9 @@ interface ExternalNavigationDelegate {
     /** Adds a window id to the intent, if necessary. */
     void maybeSetWindowId(Intent intent);
 
+    /** Adds the package name of a specialized intent handler. */
+    void maybeRecordAppHandlersInIntent(Intent intent, List<ResolveInfo> info);
+
     /**
      * Determine if the Chrome app is in the foreground.
      */